Home / 305,538.39-421,527.24-225,157.64

Finding the Fourth Proportional to 305,538.39, 421,527.24 and 225,157.64

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Solution

The fourth proportional to 305,538.39, 421,527.24 and 225,157.64 is: 310,632.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,538.39 : 421,527.24 = 225,157.64 : x
  2. Step 2: Convert to fraction form
    305,538.39/421,527.24 = 225,157.64/x
  3. Step 3: Cross multiply
    305,538.39x = 421,527.24 × 225,157.64
  4. Step 4: Simplify right side
    305,538.39x = 94,910,076,446.48
  5. Step 5: Solve for x
    x = 94,910,076,446.48/305,538.39
  6. Step 6: Final answer
    x = 310,632.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.